Hello
I did a fresh Ubuntu install (Ubuntu 15.10, i’m using kernel 4.2 RC8 with open source driver for my HD 7770)
Screen:
And XOrg log in attachment
2268352–151981–Xorg.0.log.txt (76 KB)
And XOrg log in attachment
I’m also experiencing this on 15.04 Ubuntu Gnome. Doesn’t seem to be laggy though
Also experiencing high CPU usage in an empty project. Intel i5 with HD4000 and Ubuntu Gnome 15.04
I’m also getting this on arch linux. The windows version running on wine takes about 40~50% so it looks like there’s something going on.
This is a known issue - idle cpu usage is (much) higher than it needs to be.
Same problem in login screen (I’m on xubuntu 14.04) - top reports 100% CPU usage.
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Still less CPU usage than chrome’s pepper flash.
Mmm… maybe I’ll wait to give the linux editor a shot.
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OK, since everyone’s chiming in, I also experience this bug, Arch Linux.
Thanks. I hadn’t bothered to read it yet. Like everyone else apparently. 
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I also have 100% of utilization of whole core when Unity is doing nothing.
I even read known issue report and failed to realize that “Idle CPU usage is higher than it should be” means 100% for whole core.
Hopefully people aren’t using apple machines to test the linux editor. For whatever reason, apple decided to go back to dual core… and make models with GPUs more expensive. My 2012 mac is more powerful than the 2015 mac (of the same price). Anyone using a ‘modern’ Apple computer that they didn’t spend at least 3k on will get 50% hardware utilization from this bug if they are running linux 
Which specific line are you referring to? The iMacs have quads as well as duals.
The minis I was looking into desktops for future purchases, but no way will that be from apple. The computers at work couldn’t even run the unreal editor lol. It just wouldn’t be worth the money I’d need to put in to get a GPU and a decent amount of RAM. I might as well wait for the nvidia pascal 
Rant? I’m putting a new computer off for a while. I’m accepting the reality of population count on dedicated machines. I enjoy CoD because it’s fast paced and there’s always people playing. On dedicated systems, that is. On PC, the community starts between 50k and 100k, then over a few months drops down to 1k to 4k. It’s crazy. On ps3 the call of duty game from 3 years ago has 130,000 people still! I prefer PC for most things, but I am settling for console gaming for multiplayer games. I bought a 3ds solely to play monster hunter and now I’m buying a PS4 solely to play cal of duty. If I wanted the highest player count I suppose xbox one would be the better option, but as long as the games have over 100,000 people there’s no trouble in finding games.
The high cpu usage is related to the tab “game”. when i reduce the size of this tab, the cpu drops to 30% … sometimes …
I get 100% CPU core-cycling while on the startup splash screen
Once inside the editor it settles at 40% on all cores
